King Engine Bearings MB7772XP.025 Performance Main Bearing Set 0.25mm Oversized Subaru EZ30/EZ30D

The King Engine Bearings MB7772XP0.25 is a precision-engineered performance main bearing set specifically designed for Subaru EZ30 and EZ30D 3.0L H6 engines. This 0.25mm (0.010") oversized bearing set is ideal for engines with crankshafts that have been machined undersize, providing the proper clearances for optimal performance and longevity.

XP Series Performance Features:

• Features King's proprietary pMaxBlack™ overlay producing superior load capacity
• Tri-metal lead bronze construction with nano-scaled hardening process of Babbitt overlay that withstands 10,200 PSI load
• Overlay features proprietary nano-scaled hardening process producing superior load capacity
• Bull's Eye Tolerance™ technology maintains wall thickness tolerances of +/- 0.0001 inch
• Prevents lug generated oil leaks while achieving better load capacity and oil film distribution
• 90° oil groove shape keeps oil flow intact and increases bearing load capacity by expanding surface area

Race-Proven Construction:

• Layered copper lead construction with nickel plate barrier and lead/tin/copper Babbitt overlay over steel backing
• Seven-pair race bearing set with leaded or lead-free tri-layers for low to heavy load engines
• Narrowed for large radii crankshafts with enlarged, chamfered oil holes and full, 3/4", or 1/2" grooving for improved oiling

Ideal for circle track, drag racing, off-shore, and other racing applications that utilize steel crankshafts. King Engine Bearings has been the choice of professional engine builders and racers since 1960, delivering race-proven reliability and performance for high-load, extended-duration applications.